D = b² - 4ас
D = 4² - 4 х (-96) = 16 + 384 = 400
Х1 = 4+20/2
Х1 = 12
Х2 = 4 - 20/2
Х2 = -8
Ответ: -8; 12.
7а + 7b = 7(a + b) = 7 × 14 = 98.
0.804*43=34,572
2.76*65=0,042
54.76*10=547.6
0.431*100=431
3.776:59=0.064
12:96=0.125
8,3:10=0.83
3,12:100=0.312
375:5+(400-346)*2=75+54*2=75+108=183
2)900-194:2-345*2=900-97-690=113